Identify the correct statements from the following:
$\mathrm{I})$ When $\mathrm{DNA}$ is hydrolysed, adenine and thymine are obtained in equal quantities.
$\mathrm{II})$ When $\mathrm{RNA}$ is hydrolysed, adenine and uracil are obtained in equal quantities.
$\mathrm{III})$ Amylose is branched polymer with $\mathrm{\alpha }1\to 4$ and $\mathrm{\alpha }1\to 6$ glycosidic linkages.
$\mathrm{IV})$ Addison disease is due to the abnormal functioning of adrenal cortex.